Re: [gentoo-user] scanner problem

[Philip Webb <purslow@ca.inter.net>]

Thanks for the replies so far, which I've followed up with ideas of my own.

(1) In  /etc/sane.d/dll.conf  (at the end) it lists

  # Add support for the Epson-specific backend. Needs media-gfx/iscan installed
  epkowa
  
I've installed 'iscan', but it makes no difference.

(2) The  2  pkgs which mb relevant & which have been updated > 180626
are the kernel & 'gtk+:2' : syslog reports use of 'ehci-pci',
but that is enabled in my kernel 4.14.52 ; might 'gtk' be the problem ?

(3) I can scan without problems using Mint Xfce (on another partition),
so it's not a hardware problem.

(4) 'lsusb' lists "Bus 001 Device 004: ID 0418: 013b Seiko Epson Corp".

(5) the 'epkowa' driver is the latest version : a download from
'support.epson.net/linux/en/iscan.php?model=perfection-v550&version=1.0.1'
gets the same compressed files as are already installed (same sizes).

(6) the output from 'strace' is at
http://chass.utoronto.ca/~purslow/test/xsane-trace.d1 .

(7) When the scanner is switched on (already connected), syslog says :

  usb1-3: new high-speed USB device number 3 using ehci-pci
  New USB device found, idVendor 04b8, idProduct 013b
                 strings: MFr=1, Product=2, SerNo=0
  Product: EPSON Scanner; Manufacturer: EPSON

(8) Users at Ubuntu have been having problems starting Autumn 2017 :
https://bugs.launchpad.net/ubuntu/+source/sane-backends/+bug1728012 :
see esp  # 20  &  # 144 .

(9) Vuescan is a possible alternative : does anyone have experience ?

Further thoughts from anyone are very welcome.

-- 
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